| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.ambari.server.state; |
| |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.locks.ReadWriteLock; |
| |
| import org.apache.ambari.server.AmbariException; |
| import org.apache.ambari.server.controller.ClusterResponse; |
| import org.apache.ambari.server.controller.ServiceConfigVersionResponse; |
| import org.apache.ambari.server.orm.entities.ClusterVersionEntity; |
| import org.apache.ambari.server.orm.entities.HostEntity; |
| import org.apache.ambari.server.orm.entities.HostVersionEntity; |
| import org.apache.ambari.server.orm.entities.PrivilegeEntity; |
| import org.apache.ambari.server.orm.entities.RepositoryVersionEntity; |
| import org.apache.ambari.server.state.configgroup.ConfigGroup; |
| import org.apache.ambari.server.state.scheduler.RequestExecution; |
| |
| import com.google.common.collect.ListMultimap; |
| |
| public interface Cluster { |
| |
| /** |
| * Get the cluster ID |
| */ |
| long getClusterId(); |
| |
| /** |
| * Get the Cluster Name |
| */ |
| String getClusterName(); |
| |
| /** |
| * Set the Cluster Name |
| */ |
| void setClusterName(String clusterName); |
| |
| /** |
| * Add a service to a cluster |
| * @param service |
| */ |
| void addService(Service service) throws AmbariException; |
| |
| /** |
| * Get a service |
| * @param serviceName |
| * @return |
| */ |
| Service getService(String serviceName) throws AmbariException; |
| |
| /** |
| * Get all services |
| * @return |
| */ |
| Map<String, Service> getServices(); |
| |
| /** |
| * Get all ServiceComponentHosts on a given host |
| * @param hostname |
| * @return |
| */ |
| List<ServiceComponentHost> getServiceComponentHosts(String hostname); |
| |
| /** |
| * Gets a map of components to hosts they are installed on. |
| * <p> |
| * This may may be filtered by host and/or service by optionally providing a set of hostname |
| * and/or service names to use as a filter. <code>null</code> for either filter indicates no |
| * filter (or all), an empty set indicates a complete filter (or none). |
| * |
| * @param hostNames |
| * @param serviceNames |
| * @return a map of (filtered) components to hosts |
| */ |
| Map<String, Set<String>> getServiceComponentHostMap(Set<String> hostNames, Set<String> serviceNames); |
| |
| /** |
| * Get all ServiceComponentHosts for a given service and optional component |
| * |
| * If the component name is <code>null</code>, all components for the requested service will be returned. |
| * |
| * @param serviceName the name a the desired service |
| * @param componentName the name a the desired component - null indicates all components for the service |
| * @return a list of found ServiceComponentHost instances |
| */ |
| List<ServiceComponentHost> getServiceComponentHosts(String serviceName, String componentName); |
| |
| /** |
| * Get all hosts associated with this cluster. |
| * |
| * @return collection of hosts that are associated with this cluster |
| */ |
| public Collection<Host> getHosts(); |
| |
| /** |
| * Get all of the hosts running the provided service and component. |
| * @param serviceName |
| * @param componentName |
| * @return |
| */ |
| Set<String> getHosts(String serviceName, String componentName); |
| |
| |
| /** |
| * Adds schs to cluster AND persists them |
| * TODO consider making persisting optional |
| * @param serviceComponentHosts |
| * @throws AmbariException |
| */ |
| void addServiceComponentHosts(Collection<ServiceComponentHost> serviceComponentHosts) throws AmbariException; |
| |
| /** |
| * Remove ServiceComponentHost from cluster |
| * @param svcCompHost |
| */ |
| void removeServiceComponentHost(ServiceComponentHost svcCompHost) |
| throws AmbariException; |
| |
| |
| /** |
| * Get the ClusterVersionEntity object whose state is CURRENT. |
| * @return Cluster Version entity to whose state is CURRENT. |
| */ |
| ClusterVersionEntity getCurrentClusterVersion(); |
| |
| /** |
| * If no RU/EU is in progress, get the ClusterVersionEntity object whose state is CURRENT. |
| * If RU/EU is in progress, based on the direction and desired stack, determine which version to use. |
| * @return Cluster Version entity to use. |
| */ |
| ClusterVersionEntity getEffectiveClusterVersion() throws AmbariException; |
| |
| /** |
| * Get all of the ClusterVersionEntity objects for the cluster. |
| * @return |
| */ |
| Collection<ClusterVersionEntity> getAllClusterVersions(); |
| |
| /** |
| * Get desired stack version |
| * @return |
| */ |
| StackId getDesiredStackVersion(); |
| |
| /** |
| * Set desired stack version |
| * @param stackVersion |
| */ |
| void setDesiredStackVersion(StackId stackVersion) throws AmbariException; |
| |
| /** |
| * Sets the desired stack version, optionally setting all owned services, |
| * components, and host components |
| * @param stackId the stack id |
| * @param cascade {@code true} to cascade the desired version |
| */ |
| public void setDesiredStackVersion(StackId stackId, boolean cascade) throws AmbariException; |
| |
| |
| /** |
| * Get current stack version |
| * @return |
| */ |
| StackId getCurrentStackVersion(); |
| |
| /** |
| * Set current stack version |
| * @param stackVersion |
| */ |
| void setCurrentStackVersion(StackId stackVersion) throws AmbariException; |
| |
| /** |
| * Create host versions for all of the hosts that don't already have the stack version. |
| * @param hostNames Collection of host names |
| * @param currentClusterVersion Entity that contains the cluster's current stack (with its name and version) |
| * @param desiredState Desired state must be {@link RepositoryVersionState#CURRENT} or {@link RepositoryVersionState#UPGRADING} |
| * @throws AmbariException |
| */ |
| void mapHostVersions(Set<String> hostNames, |
| ClusterVersionEntity currentClusterVersion, |
| RepositoryVersionState desiredState) throws AmbariException; |
| |
| /** |
| * Creates or updates host versions for all of the hosts within a cluster |
| * based on state of cluster stack version. This is used to transition all |
| * hosts into the {@link RepositoryVersionState#INSTALLING} state. |
| * <p/> |
| * The difference between this method compared to |
| * {@link Cluster#mapHostVersions} is that it affects all hosts (not only |
| * missing hosts). |
| * <p/> |
| * Hosts that are in maintenance mode will be transititioned directly into |
| * {@link RepositoryVersionState#OUT_OF_SYNC} instead. |
| * |
| * @param sourceClusterVersion |
| * cluster version to be queried for a stack name/version info and |
| * desired RepositoryVersionState. The only valid state of a cluster |
| * version is {@link RepositoryVersionState#INSTALLING} |
| * @throws AmbariException |
| */ |
| void transitionHostsToInstalling(ClusterVersionEntity sourceClusterVersion) |
| throws AmbariException; |
| |
| /** |
| * For a given host, will either either update an existing Host Version Entity for the given version, or create |
| * one if it doesn't exist |
| * |
| * @param host Host Entity object |
| * @param repositoryVersion Repository Version that the host is transitioning to |
| * @param stack Stack information with the version |
| * @return Returns either the newly created or the updated Host Version Entity. |
| * @throws AmbariException |
| */ |
| HostVersionEntity transitionHostVersionState(HostEntity host, |
| final RepositoryVersionEntity repositoryVersion, final StackId stack) |
| throws AmbariException; |
| |
| /** |
| * Update state of a cluster stack version for cluster based on states of host versions and stackids. |
| * @param repositoryVersion the repository version entity whose version is a value like 2.2.1.0-100) |
| * @throws AmbariException |
| */ |
| void recalculateClusterVersionState(RepositoryVersionEntity repositoryVersion) throws AmbariException; |
| |
| /** |
| * Update state of all cluster stack versions for cluster based on states of host versions. |
| * @throws AmbariException |
| */ |
| void recalculateAllClusterVersionStates() throws AmbariException; |
| |
| /** |
| * Create a cluster version for the given stack and version, whose initial |
| * state must either be either {@link RepositoryVersionState#UPGRADING} (if no |
| * other cluster version exists) or {@link RepositoryVersionState#INSTALLING} |
| * (if at exactly one CURRENT cluster version already exists). |
| * |
| * @param stackId |
| * Stack ID |
| * @param version |
| * Stack version |
| * @param userName |
| * User performing the operation |
| * @param state |
| * Initial state |
| * @throws AmbariException |
| */ |
| void createClusterVersion(StackId stackId, String version, |
| String userName, RepositoryVersionState state) throws AmbariException; |
| |
| /** |
| * Transition an existing cluster version from one state to another. |
| * |
| * @param stackId |
| * Stack ID |
| * @param version |
| * Stack version |
| * @param state |
| * Desired state |
| * @throws AmbariException |
| */ |
| void transitionClusterVersion(StackId stackId, String version, |
| RepositoryVersionState state) throws AmbariException; |
| |
| /** |
| * Gets whether the cluster is still initializing or has finished with its |
| * deployment requests. |
| * |
| * @return either {@link State#INIT} or {@link State#INSTALLED}, never |
| * {@code null}. |
| */ |
| State getProvisioningState(); |
| |
| /** |
| * Sets the provisioning state of the cluster. |
| * |
| * @param provisioningState |
| * the provisioning state, not {@code null}. |
| */ |
| void setProvisioningState(State provisioningState); |
| |
| /** |
| * Gets the cluster's security type. |
| * |
| * @return this Cluster's security type |
| */ |
| SecurityType getSecurityType(); |
| |
| /** |
| * Sets this Cluster's security type. |
| * |
| * @param securityType a SecurityType to set |
| */ |
| void setSecurityType(SecurityType securityType); |
| |
| /** |
| * Gets all configs that match the specified type. Result is not the |
| * DESIRED configuration for a cluster. |
| * @param configType the config type to return |
| * @return a map of configuration objects that have been set for the given type |
| */ |
| Map<String, Config> getConfigsByType(String configType); |
| |
| /** |
| * Gets all properties types that mach the specified type. |
| * @param configType the config type to return |
| * @return properties types for given config type |
| */ |
| Map<PropertyInfo.PropertyType, Set<String>> getConfigPropertiesTypes(String configType); |
| |
| /** |
| * Gets the specific config that matches the specified type and tag. This not |
| * necessarily a DESIRED configuration that applies to a cluster. |
| * @param configType the config type to find |
| * @param versionTag the config version tag to find |
| * @return a {@link Config} object, or <code>null</code> if the specific type |
| * and version have not been set. |
| */ |
| Config getConfig(String configType, String versionTag); |
| |
| /** |
| * Gets the specific config that matches the specified type and version. This not |
| * necessarily a DESIRED configuration that applies to a cluster. |
| * @param configType the config type to find |
| * @param configVersion the config version to find |
| * @return a {@link Config} object, or <code>null</code> if the specific type |
| * and version have not been set. |
| */ |
| Config getConfigByVersion(String configType, Long configVersion); |
| |
| /** |
| * Sets a specific config. NOTE: This is not a DESIRED configuration that |
| * applies to a cluster. |
| * @param config the config instance to add |
| */ |
| void addConfig(Config config); |
| |
| /** |
| * Gets all configurations defined for a cluster. |
| * @return the collection of all configs that have been defined. |
| */ |
| Collection<Config> getAllConfigs(); |
| |
| /** |
| * Adds and sets a DESIRED configuration to be applied to a cluster. There |
| * can be only one selected config per type. |
| * @param user the user making the change for audit purposes |
| * @param configs the set of {@link org.apache.ambari.server.state.Config} objects to set as desired |
| * @return <code>true</code> if the config was added, or <code>false</code> |
| * if the config is already set as the current |
| */ |
| ServiceConfigVersionResponse addDesiredConfig(String user, Set<Config> configs); |
| |
| /** |
| * Adds and sets a DESIRED configuration to be applied to a cluster. There |
| * can be only one selected config per type. |
| * @param user the user making the change for audit purposes |
| * @param configs the set of {@link org.apache.ambari.server.state.Config} objects to set as desired |
| * @param serviceConfigVersionNote note to attach to service config version if created |
| * @return <code>true</code> if the config was added, or <code>false</code> |
| * if the config is already set as the current |
| */ |
| ServiceConfigVersionResponse addDesiredConfig(String user, Set<Config> configs, String serviceConfigVersionNote); |
| |
| ServiceConfigVersionResponse createServiceConfigVersion(String serviceName, String user, String note, |
| ConfigGroup configGroup); |
| |
| String getServiceForConfigTypes(Collection<String> configTypes); |
| |
| /** |
| * Apply specified service config version (rollback) |
| * @param serviceName service name |
| * @param version service config version |
| * @param user the user making the change for audit purposes |
| * @param note |
| * @return service config version created |
| * @throws AmbariException |
| */ |
| ServiceConfigVersionResponse setServiceConfigVersion(String serviceName, Long version, String user, String note) throws AmbariException; |
| |
| /** |
| * Get currently active service config versions for stack services |
| * @return |
| */ |
| Map<String, Collection<ServiceConfigVersionResponse>> getActiveServiceConfigVersions(); |
| |
| /** |
| * Get service config version history |
| * @return |
| */ |
| List<ServiceConfigVersionResponse> getServiceConfigVersions(); |
| |
| /** |
| * Gets the desired (and selected) config by type. |
| * @param configType the type of configuration |
| * @return the {@link Config} instance, or <code>null</code> if the type has |
| * not been set. |
| */ |
| Config getDesiredConfigByType(String configType); |
| |
| /** |
| * Check if config type exists in cluster. |
| * @param configType the type of configuration |
| * @return <code>true</code> if config type exists, else - <code>false</code> |
| */ |
| boolean isConfigTypeExists(String configType); |
| /** |
| * Gets the active desired configurations for the cluster. |
| * @return a map of type-to-configuration information. |
| */ |
| Map<String, DesiredConfig> getDesiredConfigs(); |
| |
| /** |
| * Gets the active desired configurations for the cluster. |
| * @param bypassCache don't use cached values |
| * @return a map of type-to-configuration information. |
| */ |
| Map<String, DesiredConfig> getDesiredConfigs(boolean bypassCache); |
| |
| /** |
| * Gets all versions of the desired configurations for the cluster. |
| * @return a map of type-to-configuration information. |
| */ |
| Map<String, Set<DesiredConfig>> getAllDesiredConfigVersions(); |
| |
| |
| /** |
| * Creates a cluster response based on the current cluster definition |
| * @return |
| * @throws AmbariException |
| */ |
| ClusterResponse convertToResponse() throws AmbariException; |
| |
| /** |
| * Refreshes the cluster details |
| */ |
| void refresh(); |
| |
| /** |
| * Creates a debug dump based on the current cluster state |
| * @param sb |
| */ |
| void debugDump(StringBuilder sb); |
| |
| /** |
| * Delete all the services associated with this cluster |
| * @throws AmbariException |
| */ |
| void deleteAllServices() throws AmbariException; |
| |
| /** |
| * Delete the named service associated with this cluster |
| * @param serviceName |
| * @throws AmbariException |
| */ |
| void deleteService(String serviceName) throws AmbariException; |
| |
| /** |
| * Gets if the cluster can be deleted |
| * @return |
| */ |
| boolean canBeRemoved(); |
| |
| /** |
| * Delete the cluster |
| * @throws AmbariException |
| */ |
| void delete() throws AmbariException; |
| |
| /** |
| * Add service to the cluster |
| * @param serviceName |
| * @return |
| * @throws AmbariException |
| */ |
| Service addService(String serviceName) throws AmbariException; |
| |
| /** |
| * Get lock to control access to cluster structure |
| * @return cluster-global lock |
| */ |
| ReadWriteLock getClusterGlobalLock(); |
| |
| /** |
| * Fetch desired configs for list of hosts in cluster |
| * @param hostIds |
| * @return |
| */ |
| Map<Long, Map<String, DesiredConfig>> getHostsDesiredConfigs(Collection<Long> hostIds); |
| |
| /** |
| * Fetch desired configs for all hosts in cluster |
| * @return |
| */ |
| Map<Long, Map<String, DesiredConfig>> getAllHostsDesiredConfigs(); |
| |
| /** |
| * Add a new config group to the set of Config groups associated with this |
| * cluster |
| * @param configGroup |
| * @throws AmbariException |
| */ |
| void addConfigGroup(ConfigGroup configGroup) throws AmbariException; |
| |
| /** |
| * Get config groups associated with this cluster |
| * @return unmodifiable map of config group id to config group. Will not return null. |
| */ |
| Map<Long, ConfigGroup> getConfigGroups(); |
| |
| /** |
| * Delete this config group identified by the config group id |
| * @param id |
| * @throws AmbariException |
| */ |
| void deleteConfigGroup(Long id) throws AmbariException; |
| |
| /** |
| * Find all config groups associated with the give hostname |
| * @param hostname |
| * @return Map of config group id to config group |
| */ |
| Map<Long, ConfigGroup> getConfigGroupsByHostname(String hostname) |
| throws AmbariException; |
| |
| /** |
| * Add a @RequestExecution to the cluster |
| * @param requestExecution |
| * @throws AmbariException |
| */ |
| void addRequestExecution(RequestExecution requestExecution) |
| throws AmbariException; |
| |
| /** |
| * Get all @RequestExecution objects associated with the cluster |
| * @return |
| */ |
| Map<Long, RequestExecution> getAllRequestExecutions(); |
| |
| /** |
| * Delete a @RequestExecution associated with the cluster |
| * @param id |
| * @throws AmbariException |
| */ |
| void deleteRequestExecution(Long id) throws AmbariException; |
| |
| /** |
| * Get next version of specified config type |
| * @param type config type |
| * @return next version of config |
| */ |
| Long getNextConfigVersion(String type); |
| |
| /** |
| * Bulk handle service component host events |
| * |
| * @param eventMap serviceName - event mapping |
| * @return map of failed events where key is event and value is short message |
| */ |
| Map<ServiceComponentHostEvent, String> processServiceComponentHostEvents(ListMultimap<String, ServiceComponentHostEvent> eventMap); |
| |
| /** |
| * Determine whether or not access to this cluster resource should be allowed based |
| * on the given privilege. |
| * |
| * @param privilegeEntity the privilege |
| * @param readOnly indicate whether or not this check is for a read only operation |
| * |
| * @return true if the access to this cluster is allowed |
| */ |
| boolean checkPermission(PrivilegeEntity privilegeEntity, boolean readOnly); |
| |
| /** |
| * Add the given map of attributes to the session for this cluster. |
| * |
| * @param attributes the session attributes |
| */ |
| void addSessionAttributes(Map<String, Object> attributes); |
| |
| /** |
| * Sets or adds an attribute in the session for this cluster |
| * |
| * @param key the name of the key which identifies the attribute in the map |
| * @param value the value to set |
| */ |
| void setSessionAttribute(String key, Object value); |
| |
| /** |
| * Removes an attribute from the session for this cluster |
| * |
| * @param key the name of the key which identifies the attribute in the map |
| */ |
| void removeSessionAttribute(String key); |
| |
| /** |
| * Get the map of session attributes for this cluster. |
| * |
| * @return the map of session attributes for this cluster; never null |
| */ |
| Map<String, Object> getSessionAttributes(); |
| |
| /** |
| * Makes the most recent configurations in the specified stack the current set |
| * of configurations. This method will first ensure that the cluster's current |
| * stack matches that of the configuration stack specified. |
| * <p/> |
| * When completed, all other configurations for any other stack will remain, |
| * but will not be marked as selected. |
| * |
| * @param stackId |
| * the stack to use when finding the latest configurations (not |
| * {@code null}). |
| */ |
| void applyLatestConfigurations(StackId stackId); |
| |
| /** |
| * Removes all cluster configurations and service configurations that belong |
| * to the specified stack. |
| * |
| * @param stackId |
| * the stack to use when finding the configurations to remove (not |
| * {@code null}). |
| */ |
| void removeConfigurations(StackId stackId); |
| |
| /** |
| * Clear cluster caches and re-read data from database |
| */ |
| void invalidateData(); |
| |
| /** |
| * Returns whether this cluster was provisioned by a Blueprint or not. |
| * @return true if the cluster was deployed with a Blueprint otherwise false. |
| */ |
| boolean isBluePrintDeployed(); |
| |
| /** |
| * Gets whether there is an upgrade which has been suspended and not yet |
| * finalized. |
| * |
| * @return {@code true} if the last upgrade is in the |
| * {@link UpgradeState#SUSPENDED}. |
| */ |
| boolean isUpgradeSuspended(); |
| |
| /** |
| * Returns the name of the service that the passed config type belongs to. |
| * @param configType the config type to look up the service by |
| * @return returns the name of the service that the config type belongs to if there is any |
| * otherwise returns null. |
| */ |
| String getServiceByConfigType(String configType); |
| } |